我目前正在使用以下代码检测我的应用中的滑动手势:
- (IBAction)swiperMethod:(UISwipeGestureRecognizer *)sender {
_sampleText.text=@"hi";
}
- (void)viewDidLoad
{
[super viewDidLoad];
UISwipeGestureRecognizer *leftRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swiperMethod:)];
[leftRecognizer setDirection: UISwipeGestureRecognizerDirectionLeft];
[[self view] addGestureRecognizer:leftRecognizer];
// Do any additional setup after loading the view, typically from a nib.
}
但是,我想将滑动识别限制为UImageView定义的部分屏幕。有一个简单的方法吗?感谢。
答案 0 :(得分:1)
如果您知道UIImageView的位置,您可以测试手势是否在该区域内:
- (BOOL)pointInside:(CGPoint)point{
return (point.y < imageViewBottom && point.y > imageViewTop && point.x < imageViewRight && point.x > imageViewLeft);
}
如果手势在UIImageview之外,则忽略它。